EP0575837B1 - Dishwasher - Google Patents
Dishwasher Download PDFInfo
- Publication number
- EP0575837B1 EP0575837B1 EP93109380A EP93109380A EP0575837B1 EP 0575837 B1 EP0575837 B1 EP 0575837B1 EP 93109380 A EP93109380 A EP 93109380A EP 93109380 A EP93109380 A EP 93109380A EP 0575837 B1 EP0575837 B1 EP 0575837B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- substance
- chamber
- water
- washing tank
- waste pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000126 substance Substances 0.000 claims description 16
- 238000005406 washing Methods 0.000 claims description 14
- 239000012267 brine Substances 0.000 claims description 13
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 239000002699 waste material Substances 0.000 claims description 11
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 5
- 239000011780 sodium chloride Substances 0.000 claims description 5
- 230000001172 regenerating effect Effects 0.000 claims description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 4
- 239000003456 ion exchange resin Substances 0.000 description 4
- 229920003303 ion-exchange polymer Polymers 0.000 description 4
- 239000008237 rinsing water Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4229—Water softening arrangements
Definitions
- the present invention relates to a domestic electric appliance, in particular a dishwasher, including:
- a domestic electric appliance of the type described above is known from British patent application No. 2210256.
- the chamber for receiving the used brine and the water used for rinsing the substance with decalcifying properties is disposed hydraulically upstream of the washing tank and is connected to the lower portion thereof, which is known as the sump.
- the used brine and the rinsing water can thus be discharged to the sump and are then conveyed into the general waste pipe of the domestic electric appliance.
- the sump Since the used brine has corrosive properties, the sump has to be made of plastics material, unlike the other parts of the washing tank which are made of metal.
- the subject of the present invention is a domestic electric appliance of the type indicated above, further comprising the features specified in the characterizing portion of claim 1.
- the used brine and the water used to rinse the substance with decalcifying properties flow from the chamber into the general waste pipe of the domestic electric appliance downstream of the washing tank, preventing corrosion problems from arising therein.
- an air break chamber is indicated 10
- a container for a substance with decalcifying properties for example, an ion-exchange resin
- a salt reservoir is indicated 14
- a metering chamber is indicated 16
- a washing tank is indicated 18
- a chamber for receiving used brine is indicated 20
- an electric pump positioned in a general waste pipe 24 of the domestic electric appliance is indicated 22.
- the water supplied from the duct 26 flows firstly into the tank 10 and most of it is then sent into the ion-exchange resin container 12 where it is decalcified.
- the decalcified water is then admitted to the metering chamber 16 and then to the tank 18 from which, upon completion of the washing cycle, it is discharged through the waste pipe 24 in which the electric pump 22 is disposed.
- the rest of the water supplied is sent from the tank 10 to the salt reservoir 14, where it forms a brine which is passed through the ion-exchange resin container 12 so as to regenerate the resin after it has been used to soften the water to be sent to the metering chamber 16.
- Any residues of saline substances or calcareous deposits are then rinsed from the ion-exchange resin container 12 by a further flow of rinsing water from the tank 10.
- the used brine and rinsing water are drained into the chamber 20, the outlet duct 28 of which joins the general waste pipe 24 of the domestic electric appliance downstream of the washing tank 18 so that the chamber 20 is disposed hydraulically in parallel therewith.
- the outlet duct 28 of the chamber 20 may join the general waste pipe 24 either upstream of the electric pump 22 (as shown in Figure 1) or downstream of the electric pump 22 (as shown in Figure 2).
- the chamber 20 may be emptied, for example, by gravity.
- the portion of the general waste pipe 24 including the point at which it joins the outlet duct 28 of the chamber 20 may be shaped like a Venturi tube. In this case, the flow of liquid through this portion generates a vacuum which sucks the liquid out of the chamber 20, even if it is positioned below the general waste pipe 24.
Landscapes
- Detergent Compositions (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITTO920530 | 1992-06-22 | ||
ITTO920530A IT1259587B (it) | 1992-06-22 | 1992-06-22 | Apparecchio elettrodomestico. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0575837A1 EP0575837A1 (en) | 1993-12-29 |
EP0575837B1 true EP0575837B1 (en) | 1996-11-27 |
Family
ID=11410551
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP93109380A Expired - Lifetime EP0575837B1 (en) | 1992-06-22 | 1993-06-11 | Dishwasher |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0575837B1 (it) |
DE (1) | DE69306177T2 (it) |
ES (1) | ES2094964T3 (it) |
IT (1) | IT1259587B (it) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4413432C1 (de) * | 1994-04-18 | 1995-08-31 | Bauknecht Hausgeraete | Programmgesteuerte Geschirrspülmaschine |
DE19645274A1 (de) * | 1996-11-02 | 1998-05-07 | Miele & Cie | Verfahren zum Regenerieren des Ionenaustauschers einer Enthärtungseinrichtung einer programmgesteuerten Geschirrspülmaschine, sowie Geschirrspülmaschine zur Durchführung des Verfahrens |
IT1288831B1 (it) * | 1996-11-15 | 1998-09-24 | Bitron Spa | Dispositivo decalcificatore perfezionato |
IT1294124B1 (it) * | 1997-04-23 | 1999-03-22 | Electrolux Zanussi Elettrodome | Macchina lavatrice automatica con sistema di rigenerazione di mezzi addolcitori d'acqua |
DE19934954A1 (de) * | 1999-07-26 | 2001-02-01 | Aweco Appliance Sys Gmbh & Co | Haushaltsmaschine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH468504A (de) * | 1966-10-06 | 1969-02-15 | Licentia Gmbh | Verfahren zum Betreiben einer Waschmaschine |
BE807973A (fr) * | 1973-11-29 | 1974-03-15 | Solvay | Machine a laver |
DE3527182A1 (de) * | 1985-07-30 | 1987-02-12 | Licentia Gmbh | Programmgesteuerte wasch- oder geschirrspuelmaschine |
-
1992
- 1992-06-22 IT ITTO920530A patent/IT1259587B/it active IP Right Grant
-
1993
- 1993-06-11 ES ES93109380T patent/ES2094964T3/es not_active Expired - Lifetime
- 1993-06-11 DE DE69306177T patent/DE69306177T2/de not_active Expired - Fee Related
- 1993-06-11 EP EP93109380A patent/EP0575837B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69306177D1 (de) | 1997-01-09 |
DE69306177T2 (de) | 1997-03-20 |
ITTO920530A1 (it) | 1993-12-22 |
IT1259587B (it) | 1996-03-20 |
ITTO920530A0 (it) | 1992-06-22 |
EP0575837A1 (en) | 1993-12-29 |
ES2094964T3 (es) | 1997-02-01 |
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